[ATM] Fw: Pitch

["Francis J. O'Reilly" <foreilly@verizon.net>]

----- Original Message ----- 
From: "Francis J. O'Reilly" <foreilly@verizon.net>
To: "Dave and Connie" <dmatt@frontiernet.net>
Sent: Friday, February 15, 2008 8:54 PM
Subject: Re: [ATM] Pitch


> Try a Kilo of Gugolz 55. You can temper it to soften it with turpentine. 
> Better too soft than too hard.
>
> Francis J. O'Reilly
> MAJ NYG TNG
> ----- Original Message ----- 
> From: "Dave and Connie" <dmatt@frontiernet.net>
> To: <atm@atmlist.net>
> Sent: Friday, February 15, 2008 7:51 PM
> Subject: [ATM] Pitch
>
>
>> Getting to be about time to order pitch and polish.
>>
>> For those keeping score I am doing my first mirror in the wilds of 
>> western
>> NY with no local mentor.  The blank is a 10" piece of quartz that started
>> at .8" thick.  It now has a roughly f6 curve to it and has gone to 500 
>> grit
>> SiC.  That leaves four little baggies of aluminum oxide and it is time to
>> polish.  Figure a couple of weekends.
>>
>> I am working in my drafty cellar so the temperature tonight was 54 
>> degrees
>> f.  Given that it is February in Rochester it isn't going to get much
>> warmer.  I can keep the tool and blank in the living space to maintain
>> 68-70 degrees f and then go into the cold to polish.
>>
>> The tool will be a 10" cement disk about 1.25" thick.  I made it off of 
>> the
>> blank when I was at 120 grit.  It is about 4" off the final ROC so it
>> should be plenty close enough.
>>
>> The question is what should I order for pitch?  GotGrit.com has both
>> Acculap and Gugolz.
>>
>> Help -
>> Which brand?
>> Which grade?
>> How much? - the kits ship with 2 lbs of Gugolz so I can take that as a
>> hint.  The Aculap is 1/3 kg so I don't know if 2 cans will do the job.
>>
>> Dave
>>
>> _______________________________________________
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> 

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